Temporal LSP Controller for Multi-Domain Resource Scheduling

The patent implements dynamic LSP management where LSPs are created, activated, and deactivated based on real-time traffic demands and scheduled time intervals. The system transitions from static indefinite resource reservation to dynamic temporal resource allocation, allowing resources to be released when LSPs are not actively carrying traffic, thus improving network resource usage efficiency while maintaining reliability when needed.

The system employs periodic activation and deactivation of LSPs according to scheduled time intervals. LSPs are created and activated at predetermined start times and deactivated at predetermined end times, enabling periodic resource allocation that matches traffic patterns. This periodic action allows network resources to be reserved only during necessary time windows, resolving the contradiction between continuous availability and resource efficiency.

The patent merges the simplicity of SDN controller-based LSP creation with the versatility of multi-domain tunneling by integrating temporal LSP management capabilities into the SDN controller. The controller coordinates with multiple domain controllers and path computation elements across different domains, combining centralized control simplicity with distributed multi-domain routing capability, thus achieving both ease of operation and multi-domain adaptability.

The system introduces intermediary path computation elements and domain controllers that facilitate multi-domain LSP tunneling while maintaining SDN controller simplicity. These intermediaries handle the complex cross-domain routing computations and coordinate resource reservations across multiple domains, acting as mediators between the simple SDN controller interface and the complex multi-domain infrastructure, thereby preserving ease of operation while enabling multi-domain versatility.